INSTALL

npm i node-cloudwatchlogs

USE

First, you should set AWS credentials...

const Logger = require('node-cloudwatchlogs')
Logger.setAWSKeys({
  region: process.env.REGION_AWS,
  accessKeyId: process.env.AWS_ACCESS_KEY_ID,
  secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY
})

Next, you can use the logger on anywhere call to package. Always you need to send the group and the stream names to send to AWS CloudWatchLogs, this is made by config method like example shows. The info,success,warning and error methods shows with colors (blue,green,yellow nad red respectly) the logs in NodeJS and put this state in the AWS Logs.

require('dotenv').config();
const Logger = require('node-cloudwatchlogs');
Logger.setAWSKeys({
  region: process.env.REGION_AWS,
  accessKeyId: process.env.AWS_ACCESS_KEY_ID,
  secretAccessKey: process.env.AWS_SECRET_ACCESS_KEY,
})

Logger.setConfig({
  env: process.env.NODE_ENV || 'development', // it could takes from the NODE_ENV if you don't put anything
  logger: { // to aws cloudt logs send
    maxLine: 10, // max numbers for lines in each log
    countMsgToSend: 20, // numbers of logs group to send (each 20 messages)
    maxLevel: 3 // objects depth to send
  },
  logConsole: { // logs for nodejs
    show: true, // if you want to show the logs in the node logs
    maxLine: 15, // max lines to show
    maxLevel: 2 // objects depth to show
  }
})

const logGroup1Stream1 = Logger.config(
  'TEST', // logs group
  `EXAMPLE 1` // logs stream for each group
)

const logGroup1Stream2 = Logger.config(
  'TEST', // logs group
  `EXAMPLE 2`, // logs stream for each group
)

const logGroup2Stream1 = Logger.config(
  'TEST1', // logs group
  `EXAMPLE 1`, // logs stream for each group
)

const logGroup2Stream2 = Logger.config(
  'TEST1', // logs group
  `EXAMPLE 2`, // logs stream for each group
  {
    environment: 'staging',
    logger: { // to aws cloudt logs send
      maxLine: 10, // max numbers for lines in each log
      countMsgToSend: 20, // numbers of logs group to send (each 20 messages)
      maxLevel: 3 // objects depth to send
    },
    logConsole: { // logs for nodejs
      show: true, // if you want to show the logs in the node logs
      maxLine: 15, // max lines to show
      maxLevel: 2 // objects depth to show
    }
  }
)

logGroup1Stream1.info('EXAMPLE VOCALS', 'A')
logGroup1Stream1.info('EXAMPLE VOCALS', 'B')
logGroup1Stream1.error('EXAMPLE VOCALS', 'C')
logGroup1Stream2.error('EXAMPLE VOCALS', 'D')
logGroup1Stream2.error('EXAMPLE VOCALS', 'E')
logGroup1Stream2.warning('EXAMPLE VOCALS', 'F')

setTimeout(() => {
  logGroup1Stream1.warning('EXAMPLE VOCALS', 'G')
  logGroup1Stream1.warning('EXAMPLE VOCALS', 'H')
  logGroup1Stream1.success('EXAMPLE VOCALS', 'I')
  logGroup1Stream1.success('EXAMPLE VOCALS', 'J')
  logGroup1Stream2.success('EXAMPLE VOCALS', 'K')
  logGroup1Stream2.success('EXAMPLE VOCALS', 'L')
  logGroup1Stream2.success('EXAMPLE VOCALS', 'M')
}, 5000)

setTimeout(() => {
  logGroup2Stream1.info('EXAMPLE WHIT NUMBERS', 1)
  logGroup2Stream1.info('EXAMPLE WHIT NUMBERS', 2)
  logGroup2Stream1.info('EXAMPLE WHIT NUMBERS', 3)
  logGroup2Stream2.error('EXAMPLE WHIT NUMBERS', 4)
  logGroup2Stream2.error('EXAMPLE WHIT NUMBERS', 5)
  logGroup2Stream2.error('EXAMPLE WHIT NUMBERS', 6)
}, 8000)

setTimeout(() => {
  logGroup2Stream1.warning('EXAMPLE WHIT NUMBERS', 7)
  logGroup2Stream1.warning('EXAMPLE WHIT NUMBERS', 8)
  logGroup2Stream1.warning('EXAMPLE WHIT NUMBERS', 9)
  logGroup2Stream2.success('EXAMPLE WHIT NUMBERS', 10)
  logGroup2Stream2.success('EXAMPLE WHIT NUMBERS', 11)
}, 9000)

require('net').createServer().listen();

NodeJS Logs

AWS groups

AWS streams for a group